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Geological Hazards and Exploration in Civil Engineering

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Geological Hazards and Exploration in Civil Engineering

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Questions and Answers

What is the first step in a geotechnical investigation?

Gathering all available information

What is the purpose of a walk-over survey in a site investigation?

To identify rock type and boundaries, areas where the bedrock is covered with soils, and the stress situation in the area

At what stage of a site investigation is extensive field investigation performed?

Feasibility Study

What is the purpose of a pre-feasibility study in a site investigation?

To gather limited knowledge of the geological setting and ground information Signup and view all the answers

What is the purpose of geological mapping in a site investigation?

To create detailed geological maps with profiles showing location and distribution of geological structures, weak zones, and jointing Signup and view all the answers

Why is it important to conduct investigations during construction?

To detect possible adverse ground conditions ahead of the tunnel or working face Signup and view all the answers

What is the purpose of a detailed design and construction planning stage in a site investigation?

To finalize the excavation location and design, and to estimate costs and plan rock support works Signup and view all the answers

What type of information is collected during a reconnaissance survey?

Geological mapping, outcrop sampling, wide-spaced geochemical sampling, and preliminary geophysical survey Signup and view all the answers

What is the purpose of a preliminary exploration in a site investigation?

To determine whether to proceed with detailed exploration Signup and view all the answers

What is the purpose of geotechnical site investigations in construction projects?

To identify potential hazards and optimize construction plans Signup and view all the answers